Group 1 - The 11th Air Force Aviation Open Day and Changchun Air Show opened in Changchun, themed "Chasing Dreams in Air and Space, Winning the Future" [2] - The event features flight performances, equipment displays, and interactive experiences, showcasing the history and modernization achievements of the People's Air Force [2] - The J-20 fighter jets performed a series of thrilling maneuvers, marking their first joint appearance with the KJ-500 early warning aircraft, demonstrating the strong capabilities of the air force's integrated combat system [2] Group 2 - The event lasts for five days, showcasing over a hundred types of active air force aircraft and ground equipment, as well as retired classic equipment [3] - The indoor exhibition includes the China Aviation Engine Group's first appearance, featuring star products like large transport aircraft engines, highlighting the latest achievements in independent innovation [3] - The exhibition also includes engines supporting drone power, showcasing advancements in unmanned aerial vehicle technology [3]

Group 1 - The 11th Air Force Aviation Open Day and Changchun Air Show opened on September 19, featuring the theme "Chasing Dreams in Air and Space, Winning the Future" [2] - The event showcased various flying performances, equipment displays, and interactive experiences, highlighting the achievements of the People's Air Force in modernization and historical legacy [2] - A total of over ten flying performances were arranged, including parachute jumps and advanced aircraft maneuvers, which captivated the audience [3] Group 2 - The event included a static display of the J-20 fighter jet for the first time, along with the public opening of the Y-20 cargo aircraft's cargo hold [5] - The indoor exhibition featured the China Aviation Engine Group for the first time, showcasing various star products, including large transport aircraft engines, reflecting the latest achievements in independent innovation [5] - The event lasted for five days, displaying over a hundred types of active Air Force aircraft, ground equipment, and retired classic equipment, illustrating the development trajectory of Air Force capabilities [5]